Electrical transmission or interconnection systems – Plural supply circuits or sources – Plural converters
Patent
1982-01-21
1984-04-03
Goldberg, E. A.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Plural converters
363 69, 363 71, H02J 100
Patent
active
044410328
ABSTRACT:
Two rectifiers and two inverters are operated under the state under which they are connected in parallel by common transmission lines. These rectifiers and inverters are controlled an independent control apparatus respectively which can selectively apply either the constant current control or the constant voltage control.
The control apparatus of each converter has bestowed thereon the reference value of a current to flow through the particular converter and the reference value of a terminal voltage of the particular converter. A signal for lowering the current reference value is added to the control apparatus of one or all of the converters which are to be operated as the inverters. On the other hand, a signal for essentially rendering the terminal voltage of the converter smaller than the voltage reference value is added to the control apparatus of the converter which is to be operated as the converter for determining the voltage of a direct current system.
REFERENCES:
patent: 3943429 (1976-03-01), Heintze
patent: 4270165 (1981-05-01), Carpenter et al.
patent: 4328429 (1982-05-01), Kublick
Azzis and Baret, "Parallel Identical Direct-Mode DC-DC Converters", IBM Tech. Disclosure Bulletin, vol. 25, No. 2, Jul. 1982.
Goto Kiyoshi
Kawai Tadao
Konishi Hiroo
Sakurai Takeichi
Goldberg E. A.
Hitachi , Ltd.
Jennings Derek
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